This case study reports on a mixed-methods research programme examining occupational commitment in students studying for a qualification in a care profession. This programme took an explorative approach, beginning with qualitative semi-structured interviews in order to generate a theoretical model, before testing this model using a quantitative survey. This mixed-methods approach combines the strength of qualitative methodology in examining the complexity and context of a phenomenon with the strength of quantitative methodology in theory testing. This approach was also useful in responding to unexpected concerns that were raised by key informants. Advice is given regarding the use of mixed methods, conducting interviews and surveys, analysing qualitative data and measuring quantitative data. Key to benefiting from a mixed-methods approach is considering how multiple techniques and sources may provide complementary data.